[Add contribution guidelines] Improve readme file

[jayk-gupta]

Please add contribution guidelines ,how we can contribute to this project

[KetanParmar02]

hello, @jayk-gupta i'm interested add contribution guidelines in readme file so, you can assign me this issue.
and also, say me inn which file changes i do..

[HK-HARSH001]

if it is open can you assign me

[satishbhisss-source]

anyone still working on this issue? I would like to help with this.

[23101133370087]

Anyone still working on the issue? I would like to help with this

[shiva119127]

can i work on this issue, please assign it to me